NAME ___________________________________________________ DATE _____________________ PERIOD __________
Lesson 2 Homework Practice
Negative Exponents
Write each expression using a positive exponent.
1
1. 7-8 −8
7
1
2. 10-6 −6
10
1
1
3. 23-1 −1 or −
23
23
1
4. (-5)-2 −2
(-5)
1
5. (-18)-10 −
(-18) 10
1
6. m-99 −
m 99
1
7. (-1)-12 −
(-1) 12
8. c-6
−6
1
c
1
9. p-5 −
p5
11. z-4
−4
1
z
1
12. t-2 −
t2
1
10. g-17 −
g 17
Write each fraction as an expression using a negative exponent other than -1.
1
13. −
2-10
2 10
1
14. −
29-3
3
1
15. −
4-4
44
1
-1
16. −
39 39
1
17. −
81-7
7
1
18. −
m-4
4
1
19. −
x -3
3
1 a-2
20. −
2
1
-2
21. −
49 7
1
2-3
22. −
8
1
12-2
23. −
144
1
13-2
24. −
169
29
81
a
Evaluate each expression if x = 3, y = -2, and z = 4.
1
25. x-4 −
81
1
26. y-2 −
4
1
28. z-4 −
256
29. 5
3
31. 3z-1 −
4
1
32. zy −
16
y
1
25
−
1
27. y-5 - −
32
30. 10
y
1
100
−
1
33. (xz)-2 −
144
1
34. Hair grows at a rate of −
inch per day. Write this number using negative exponents.
8-2 or 4-3 or 2-6
64
Math Accelerated • Chapter 4 Powers and Roots
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